Chemistry, 05.12.2020 23:10, jolainjoseph01998

Which of the following is an example of an observation? a. Paraffin wax begins to melt at 57°C.
b. The force acting on an object is equal to its mass times its acceleration.
c. Gases expand as their temperature increases because the gas molecules are moving more rapidly.
d. Will all waxes melt at the same temperature?
e. Three samples of wax are heated to 75°C.

Answers: 1

Show answers

Other questions on the subject: Chemistry

Chemistry, 22.06.2019 15:30, christopherluckey7

The reactions of photosynthesis occur in the of plant cell? a. mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll

Answers: 1

continue

Chemistry, 22.06.2019 18:00, rodriguezscarlet1713

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?

Answers: 2

continue

Chemistry, 23.06.2019 02:30, ijustneedhelp29

Which of the following statements are incorrect?

Answers: 3

continue

Chemistry, 23.06.2019 05:00, xxaurorabluexx

Which of the following describes qualitative data? a) recording the temperature of a solid as it is warmed. b) noting the color of a solution as it is heated. c) measuring the volume of an object by water displacement. d) taking the mass of an object using a balance.

Answers: 2

continue

Do you know the correct answer?

Which of the following is an example of an observation? a. Paraffin wax begins to melt at 57°C.